It's not a FPS, that should be enough. It's funny though, I can't remember the last time there was a game out like this (probably more my lack of knowledge than lack of games) and now it seems like we're getting a good amount in rather a short time with this, MGR and the new God of War.

In terms of what this game has that sets it apart, I'd probably say difficulty/level design. I haven't played it yet but DMC's are usually pretty tough and I'm guessing this is the same on it's higher difficulties and the level design just looks really fucking cool and different.